Smoke-consuming device



(No Modgl.)

E. KUNZER! SMOKE consume DEVICE.-

Patented Nov. 22, 1892.

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' j STATES PATENT OFFICE.

EMIL KUNZER, OF CHICAGO, ILLINOIS.

SMOKE-CONSUMING DEVICE.

SPECIFICATION formingpart of Letters Patent No. 486,582, dated November 22, 1892.

Application filed October 19, 1891. Serial No. 409,223. (No model.)-

To all whom it may concern.-

Be it known that I, EMIL KUNZER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvementsin Smoke-Consuming Devices, of which the following is a full, clear, and exact description, that will enable others to make and use the same, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of a locomotiveboiler embodying my improvement; Fig. 2, an end elevation of the same; Fig. 3, an enlarged broken-away sectional detail; Fig. 4, a modification showing the application and adaptation of the device to stationary boilers, and Fig. 5 a detached detail of construction.

The object of this invention is to provide an improved smoke-consuming attachment that may be used either on locomotive or stationary steam-boilers, as will be hereinafter set forth.

Referring to the drawings, A represents the boiler; B, the cold-air pipe; 0, the hot-air pipe, and D the steam-pipe through which the volume of steam is conducted to mix with the air-supplyin promotingcombustion. Annmber of curved in j ector-pipes E are used in conducting the combined steam and air into the furnace. The upper horizontal ends of these pipes are inserted through the double walls (see Fig. 3) of the boiler below the furnacedoor, Fig. 2, and stop short with the surface of the inner wall and open at a point above The lower vertical ends of the pipes E are inserted in the Ts a, which are connected by a number of nipples CL, forming a continuous connection. The hot and cold air pipes are connected at their inner ends by the T a as shown in Figs. 1 and 2. The nipple a connects the T a and the adjacent T (1, thus conducting the air into each of the series of injector-pipes E. The upper end of the steam-pipe D is inserted in the boiler at some point where it is possible to receive the driest steam, and then extends down on one side of the boiler, Figs. 1 and 2, and runs along underneath the series of curved pipes E. A number of jet-tubes a connect with the steam-supply pipe and extend up inside of the pipes E, Fig. 3, and are locked in place by the set-screw of. The

upper ends of these jet-tubes are closed, the discharge-opening a being on the side next the fire, so as to increase instead of retard the inflow of the air. The injector-pipes E may be placed in an inverted position and the injector tubes or nozzles inserted horizontally, asindicated by the dotted lines in Fig. 3.

The volume of steam admitted is regulated by the valve a'. Certain atmospheric condi tions have the eifect of creating a slow or sluggish draft, which causes an excessive volume of the gases given out by the process of combustion to accumulate in the furnace, so that when the furnace-door is opened a portion of this accumulated body of gas escapes into the cab. In order to obviate this, a pipe 17 connects with the steam-pipe D at b and terminates in the smoke-box. The passage through this pipe is controlled by the valve b Which when open will permit a portion of the gas to escape therethrough. The receiving end of the cold-air pipe B will ordinarily terminate some distance from the boiler, so as to lessen the very unpleasant 'sound that usually accompanies the admission of air when drawn in. by a steam-jet. The hot-air pipe 0 runs back to the rear end of the boiler and opens into the smoke-box. The rocking lever F is pivoted, as at d, to the front of the boiler, Fig. 1, and has the disk valves d 01 attached to the respective ends thereof, a detail of one of the valves and its pipes being shown in Fig. 5. By means of the handle 01 that end of the lever F may be raised or depressed. When depressed, as shown, the passage through the hot-air pipe is closed and the passage in the cold-air pipe opened. In the oppositeposition this condition is reversed. By this arrangement either cold or hot air may be supplied to the furnace in accordance with the varying conditions of the fire as the process of combustion progresses.

The modification illustrated in Fig. 4 shows the application of the improvement to stationary boilers, the only diderence being that the arrangement and location of the pipes are changed somewhat, the operation, however, being the same.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

In a smoke-consuming attachment, the combination of the cold-air pipe, the hot-air pipe opening inside of the smoke-box, the curved pipes E, with which the cold and hot air pipes have a common connection, the steam-supply pipe, the injector tubes ornozzles inserted in the pipes E, the rockinglever,and the 00111- panion valves attached to the respective ends thereof and inserted, respectively, in the cold and hot air pipes and alternately closing the passage therethrough in accordance with the [0 direction in which said lever is moved, sub stantiall y as and for the purpose set forth. EMIL KUNZER. \Vitnesses:

L. M. FREEMAN, J. B. DONALSON. 

